IT1086324B - FIRE ALARM SYSTEM WITH MULTIPLE SIGNALS, WHICH CAN OPERATE ON THE SAME SIGNALING CIRCUIT - Google Patents

FIRE ALARM SYSTEM WITH MULTIPLE SIGNALS, WHICH CAN OPERATE ON THE SAME SIGNALING CIRCUIT

Info

Publication number
IT1086324B
IT1086324B IT26793/77A IT2679377A IT1086324B IT 1086324 B IT1086324 B IT 1086324B IT 26793/77 A IT26793/77 A IT 26793/77A IT 2679377 A IT2679377 A IT 2679377A IT 1086324 B IT1086324 B IT 1086324B
Authority
IT
Italy
Prior art keywords
operate
alarm system
fire alarm
multiple signals
signaling circuit
Prior art date
Application number
IT26793/77A
Other languages
Italian (it)
Original Assignee
Siemens Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of IT1086324B publication Critical patent/IT1086324B/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Emergency Alarm Devices (AREA)
IT26793/77A 1976-08-24 1977-08-19 FIRE ALARM SYSTEM WITH MULTIPLE SIGNALS, WHICH CAN OPERATE ON THE SAME SIGNALING CIRCUIT IT1086324B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2638068A DE2638068C3 (en) 1976-08-24 1976-08-24 Fire alarm system with several detectors that can be operated via a message loop

Publications (1)

Publication Number Publication Date
IT1086324B true IT1086324B (en) 1985-05-28

Family

ID=5986224

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26793/77A IT1086324B (en) 1976-08-24 1977-08-19 FIRE ALARM SYSTEM WITH MULTIPLE SIGNALS, WHICH CAN OPERATE ON THE SAME SIGNALING CIRCUIT

Country Status (10)

Country Link
US (1) US4162489A (en)
JP (1) JPS5326698A (en)
AT (1) AT360875B (en)
CH (1) CH618802A5 (en)
DE (1) DE2638068C3 (en)
FR (1) FR2363154A1 (en)
GB (1) GB1584045A (en)
IT (1) IT1086324B (en)
NL (1) NL178199C (en)
SE (1) SE416592B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834143A1 (en) * 1978-08-03 1980-02-21 Siemens Ag SECURITY REPORTING SYSTEM
US4254414A (en) * 1979-03-22 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Processor-aided fire detector
US4287515A (en) * 1979-04-27 1981-09-01 Baker Industries, Inc. Fire detection system with multiple output signals
NO149868C (en) * 1981-04-15 1984-07-04 Bjoern R Hope DEVICE FOR DISTRIBUTION AND / OR EXTRACTION OF SIGNALS
FR2526190B1 (en) * 1982-04-30 1985-11-08 Europ Teletransmission METHOD FOR PROTECTING A REMOTE MONITORING SYSTEM AGAINST SABOTAGE AND SYSTEM IMPLEMENTING SAID METHOD
DE3225081A1 (en) * 1982-07-05 1984-01-12 Siemens AG, 1000 Berlin und 8000 München METHOD AND DEVICE FOR AUTOMATICALLY INQUIRING THE DETECTOR MEASUREMENT VALUE AND DETECTOR DETECTION IN A DANGER DETECTING SYSTEM
DE3225106C2 (en) * 1982-07-05 1985-04-11 Siemens AG, 1000 Berlin und 8000 München Process and device for the automatic query of the detector measured value and the detector recognition in a hazard alarm system
DE3307616A1 (en) 1983-03-03 1984-09-06 Siemens AG, 1000 Berlin und 8000 München ARRANGEMENT FOR SWITCHING SINGLE DETECTORS INTO INSPECTION MODE IN A HAZARD ALARM SYSTEM
DE3313137A1 (en) * 1983-04-12 1984-10-18 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR CANCELING NOISE IN OPTICAL SMOKE DETECTORS
NO162317C (en) * 1983-05-19 1992-02-06 Hochiki Co FIRE ALARM INSTALLATIONS
US4603318A (en) * 1983-11-14 1986-07-29 Philp Robert J Telemetry and like signaling systems
US4916432A (en) * 1987-10-21 1990-04-10 Pittway Corporation Smoke and fire detection system communication
US5019805A (en) * 1989-02-03 1991-05-28 Flash-Alert Inc. Smoke detector with strobed visual alarm and remote alarm coupling
US6194994B1 (en) 1995-03-20 2001-02-27 Wheelock, Inc. Apparatus and method for synchronizing visual/audible alarm units in an alarm system
US5608375A (en) * 1995-03-20 1997-03-04 Wheelock Inc. Synchronized visual/audible alarm system
US6906616B1 (en) * 1995-03-20 2005-06-14 Wheelock, Inc. Apparatus and method for synchronizing visual/audible alarm units in an alarm system
US6104286A (en) * 1996-07-10 2000-08-15 Luquette; Mark H. Monitoring alarm systems
WO1999053627A1 (en) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies System for communicating with electronic equipment on a network
US9015020B2 (en) * 2007-04-23 2015-04-21 Siemens Industry, Inc. Method and system for testing a building control system
US8878552B2 (en) * 2011-12-12 2014-11-04 Utc Fire And Security Americas Corp., Inc. End-of-line capacitor for measuring wiring impedance of emergency notification circuits

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214734A (en) * 1959-06-19 1965-10-26 American District Telegraph Co Protection signalling system having channel impedance alteration means for providing indications of remote station conditions
US3482243A (en) * 1966-10-28 1969-12-02 Rca Corp Protective system
SE355098B (en) * 1968-12-26 1973-04-02 Tokyo Hochiki Kk
US3651454A (en) * 1969-12-15 1972-03-21 Borg Warner Automotive multiplex system
US3753258A (en) * 1970-03-31 1973-08-14 Nittan Co Ltd Fire alarming system
US3676877A (en) * 1970-04-18 1972-07-11 Mittan Co Ltd Fire alarm system with fire zone locator using zener diode voltage monitoring
SE402660B (en) * 1970-11-12 1978-07-10 Securitas Int Ab FIREPLACE FACILITY
US3797008A (en) * 1971-02-04 1974-03-12 Nittan Co Ltd Fire detecting system
US3932858A (en) * 1973-02-08 1976-01-13 Inn-Tronics Master antenna line communication system

Also Published As

Publication number Publication date
SE7709463L (en) 1978-02-25
JPS6410878B2 (en) 1989-02-22
FR2363154B1 (en) 1982-10-29
ATA606877A (en) 1980-06-15
DE2638068C3 (en) 1986-11-13
NL7709343A (en) 1978-02-28
NL178199B (en) 1985-09-02
SE416592B (en) 1981-01-19
CH618802A5 (en) 1980-08-15
DE2638068B2 (en) 1980-08-28
DE2638068A1 (en) 1978-03-02
JPS5326698A (en) 1978-03-11
AT360875B (en) 1981-02-10
NL178199C (en) 1986-02-03
US4162489A (en) 1979-07-24
GB1584045A (en) 1981-02-04
FR2363154A1 (en) 1978-03-24

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960828